readme.txt slight modification

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-order-notes-window/trunk@802436 b8457f37-d9ea-0310-8a92-e5e31aec5664
Plugin url changed.

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-order-notes-window/trunk@802610 b8457f37-d9ea-0310-8a92-e5e31aec5664
plugin notice updated

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-order-notes-window/trunk@804479 b8457f37-d9ea-0310-8a92-e5e31aec5664